zephyr: herobrine: Update I2C bus labels
zephyr: herobrine: Update I2C bus labels

The EC chip provides a default label for every I2C bus. Override the
default label with a label matching the schematic net name.

Typing "i2c scan <tab>" on Herobrine now shows the following labels:

uart:~$ i2c scan
  I2C_SENSOR     I2C_EEPROM     I2C_RTC        I2C_USB_C1_PD  I2C_USB_C0_PD
  I2C_POWER

BUG=none
BRANCH=none
TEST=Boot Zephyr on herobrine, verify the new I2C bus labels

Signed-off-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Change-Id: I41c4bfbffca5ee49b66d6ffbfc0a6d73ea06db8d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3300665
Reviewed-by: Paul Fagerburg <d8c44b60afb21c60f56d931aa690ca1cf34910c8@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec